Innovation. Service. Integrity.

As leaders in building materials innovation, ISI Building Products creates cutting-edge insulation, building products and accessories for a variety of industries. The design and ingenuity of these products reflects our mission: to create impactful solutions for building and construction challenges.

Superior Quality. Competitive Pricing. Service Excellence.

With corporate headquarters in East Peoria, IL and manufacturing facilities throughout the Midwest, we provide building materials throughout North America with distribution in the United States, Mexico and Canada.

Owned and operated since 1997, ISI is proud of the loyalty and level of trust we’ve earned from respected manufacturers, distributors, contractors and a list of clients including:

Colleges and Universities Civic Centers Airports Zoos Hospitals Commercial and Residential Builders And More

Building Wrap Insulation Vapor Barriers House graphic showing placement of ISI product technology

The Technology Behind Our Solutions

As a leader in sustainable building materials, ISI helps create energy-efficient, weather-protected homes and buildings across the country. We believe our products are only as good as what goes into them. We search for the finest materials to provide the highest caliber of products in the marketplace.

We Manufacture Ideas Into Solutions

Our research and development process starts with customer feedback. We use our industry expertise, we find ways to utilize the best materials and manufacturing technologies to improve existing methods and expand our product lines. All our products are tested in-house and sent to nationally recognized third-party independent testing agencies for further evaluation. This quality control ensures our products are manufactured to meet and exceed all industry standards and give our customers products they can trust.


At ISI Building Products, we believe in giving back to our professional and local communities. A national company with local heart, we support programs that make our community a better place. ISI continues to play our part to ensure success in these and other organizations.


Red Feather

Red Feather partners with American Indian nations to develop sustainable solutions for housing needs within their communities. Involved since 2005, ISI Building Products has donated products to assist the organization’s misson. To learn more or to make a donation, visit

Solid Rock TRC

Solid Rock Therapeutic Riding Center provides equine therapy to children and adults in an effort to improve their functioning and well-being in life through therapeutic riding of rescued horses. To learn more about Solid Rock TRC or to make a donation, visit Solid Rock TRC's social media page.

Extreme Makeover: Home Edition

Extreme Makeover: Home Edition teamed up with ISI to help give a deserving family an extreme transformation from the ground up. Our vapor barrier, Viper VaporCheck (supplied through The McKernon Group), was used under the slab during construction.

Sacks to Mats

Sacks to Mats, formed in Plattsburgh, MO in February 2015, creates sleeping mats for the homeless. Over 500 plastic bags, along with donated strips of our Nu-Age Films, make up each mat. The finished mats are taken to nearby cities and distributed. Learn more about Sacks to Mats by emailing

Trade Associations

ISI Building Products is a member of various trade and professional organizations. We have invested in these organizations to continuously gain information on latest developments and trends in the construction industry. International, national, state and local memberships help us to achieve our goals by keeping us informed about issues in today’s ever‑changing building industry. ISI Building Products is proud to be members of the following:

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